GtkCellEditable Interface for widgets which can are used for editing cells The #GtkCellEditable interface must be implemented for widgets to be usable when editing the contents of a #GtkTreeView cell. @celleditable: the object which received the signal. @celleditable: the object which received the signal. @g_iface: @editing_done: @remove_widget: @start_editing: @cell_editable: @event: @cell_editable: @cell_editable: